I dont know which chipset to go with for my Q6700 2G 5-5-5-15 OCZ and 2x XFX 8800 GT 512.
Cards are on order as well as CPU, time for an update.
3 Choices are Intel's P35 , X38 or Nvidia's 680i.
Im getting confused reading articles and input from different people, basically I was going SLI 8800 GT's but I changed my mind to just stay with a single 8800 GT card an go with a good stable board/ chipset.
The P35 is suppost to be very good, stable although seems like its past its prime (from what Im reading)
The nvidia 680i is best for video although overheats and isnt stable (please correct me if this is wrong).
The X38 is newest and the only chipset with PCI-e2.0 at the moment, some advantage for my 8800 GT i guess.
Any feedback would help.

What about having PCI-e 2.0 as an option, would that not help with the new 8800 GT's for single card use?
Im just not sure if I should go SLI or not, I have the option just not sure for the money if its worth it.
When I look at most games its not much faster than a single card and in some cases at high res looks like 30% performance increase.
Any feedback from SLI users in here, what do you think?, is it worth it?

For SLI it really depends if your willing to sacrifice the price:performance ratio right now.

There will be newer more powerful single card solutions to upgrade to next year instead.

My brother uses 8800GTX's in SLI and it does make a difference-but as the performance increase is not doubled or even enhanced by 25% you have to really pay over the odds for that extra % boost. Plus there are driver issues to iron out.

As for mainboards:

NO SLI on Intel chipsets

Critically it maybe hard to find nvidia chipsets that support the new intel cpus. This is a real problem.

X38 has just been released and is therefore expensive. They also have some bugs to iron out from the reviews I have read of the ASUS or gigabyte X38 boards. You can get DDR3 and the price will drop on this next year, but you will have to payout $450 or so if you want it now. You could always go DDR2 in X38 which just leaves you with pcie2.0 as the main reason to get the board over the P35.

PCIE2.0 is unlikely to make much difference when using one card only.

P35 does not have the latest features but they are a solid price/performance option that natively support the latest intel cpus and are good at ocing current quads. They will likely OC the new quads nicely and with one of next years best cards I doubt the PCIE*16 lane will be saturated. Come 2009 you will want to upgrade though to DDR3 if you dont buy a DDR3 P35.

Its not an easy time to buy. Intel has bulldozed AMD out of the way and clamped down on NVIDIA's share of the mainboards so your options are more limited but still good.